TCL P7K / P79K vs Philips PUS7000

When turning to the assessment of HDR performance, we must be clear and without marketing embellishments: the P7K/P79K is not, and was never intended to be, a master in this field. The maximum peak brightness that this panel can generate hovers around a mere 300 nits. This represents a threshold, a kind of thin red line between what can be considered a barely satisfactory HDR signal and what is, in fact, not much different from standard dynamic range (SDR), unfortunately leaning towards the latter. Synthetic tests found brutal confirmation in reality – our measurements taken during movie screenings showed that luminance in key bright portions of the scenes rarely exceeded the ceiling of 200-250 nits. Thus, this is not a television that would allow content realised in a wide tonal range to spread its wings, and this must be openly admitted.

Unfortunately, the issue of colour reproduction is presented with equal restraint. Although the manufacturer positions this model within the "QLED" family, thanks to the use of a PFS LED filter, the results do not match the heightened expectations. The coverage of the wide DCI-P3 colour gamut reaches only 86%. In the context of the market, this is at best an average result, as most devices that employ additional layers to expand the colour spectrum easily achieve values at a minimum level of 90-92%.

Unfortunately, the PUS7000 is not suitable for watching HDR content. The screen is simply too dark. A brightness level of 200 nits is insufficient to properly display such a format. Even if a HDR signal message appears on the screen, the image will resemble a standard SDR recording. Therefore, it is better to stick with the latter format to avoid errors in displaying bright scenes, as discussed below. The situation is not improved by the fact that this is a classic LCD model without additional layers enhancing colours, such as QLED or PFS. As a result, colours in HDR may appear washed out. Ultimately, this gives a worse effect than in the standard SDR format, which is simply better suited to the capabilities of this panel.

Every accurate assessment of image quality must begin with selection of the most optimal factory mode. In the case of the tested model P7K/P79K, the choice was made without hesitation for the "Film" mode. It is this mode that presents an image closest to the intentions of the creators, avoiding both the exaggerated brightness of the dynamic mode and the excessive dimming known from eco settings. And it must be admitted that, for a device in this price range, the factory calibration is surprisingly decent, although it has not escaped a few missteps. The most noticeable flaw turned out to be the not completely correctly set white balance. A slight dominance of the blue component gives the image a subtly cool, cold character, thus deviating from the exemplary neutrality that the director wanted to show us. The television performs much better in reproducing the greyscale in the standard dynamic range – the gamma curve is nearly exemplary. The only minor reservation could be made regarding the darkest parts of the image, where a slight deviation from the norm causes a loss of some detail in the shadows. The most serious challenge for the TCL software, however, was interpreting the HDR signal, as illustrated by the course of the EOTF curve. The television follows its own, quite free path here – the darkest details are disproportionately brightened, after which there is a noticeable slowdown in the increase of brightness for midtones. Fortunately, most of these imperfections are software-related issues that can be eliminated. With this thought in mind, we began the process of professional calibration.

We tested the television in movie mode, which theoretically should provide the best and most natural colours. And indeed, this mode is quite correct; however, after connecting the calibration equipment, its biggest flaw came to light. The PUS7000 has significant shortcomings in displaying red. Poorly tuned white balance and overly low saturation of this colour cause the image to appear too cool. As a result, one may get the impression that the displayed content is simply lacking in vibrant colours. The situation is worsened by the fact that both SDR and HDR content are excessively brightened. This is confirmed by the gamma curve and EOTF graphs, which show that the television displays the image brighter than it should. This causes scenes to lose their depth and may appear somewhat washed out. Fortunately, in the Philips menu, we find quite a few functions to improve these aspects, so we immediately proceeded to calibration to see what could be squeezed out of this screen.

The calibration process turned out to be spot on, particularly in the context of standard dynamic range (SDR) content. We successfully mitigated the television's tendency to emphasize cool tones, restoring the whiteness to its natural neutrality. Moreover, precise adjustments allowed us to correct a slight error in the gamma curve, ensuring that the darkest parts of the image regained their proper depth, without any trace of unnatural brightness. The effects are measurable and impressive – in the ColorChecker test, the overwhelming majority of colour reproduction errors fell below the perceptual threshold, achieving a deltaE value of under 2. This is a result that pricier models would not be ashamed of. Unfortunately, when it comes to HDR content, we encounter a barrier in the form of the inherent limitations of the panel itself. And although we managed to bring the colours into line, the software's characteristics mean that the television still adapts brightness in its own way, as evidenced by the persistent, non-standard EOTF curve. In summary, calibration adds immense value, but one must be aware that it cannot overcome certain physical barriers. The slightly elevated black level, due to the lack of local dimming, along with limited peak brightness, means that HDR content may not always be able to showcase its full potential. This is simply not the primary task of this display; its true strength, especially after professional tuning, lies in the viewing of SDR material.

After professional calibration, it is evident that the PUS7000 responds well to image adjustments. In this price range, this is not at all a given. The effects should be evaluated in two scenarios, depending on what content we plan to watch. SDR performs the best. After our adjustments, the picture looks really good. Most colour errors have fallen below level 3, which is the threshold at which distortions usually begin to be visible to the naked eye in measurements. Films, series, sports, and regular television look natural, without unpleasant deviations. If someone mainly watches classic channels or streams in HD quality, the difference after calibration will be noticeable immediately. However, it must be clearly stated that the PUS7000 is still not a television suited for reasonable HDR, and calibration changes very little in this regard. The reason lies in the hardware: the colours remain too unsaturated. The television lacks solutions to expand the colour gamut, such as PFS filters or a quantum dot layer, so the panel simply cannot display the intense colours required by HDR. This is most apparent in reds, which still look pale. This limitation cannot be bypassed with menu settings, as it stems from the design of the backlighting and the panel itself.

After a series of harsh evaluations, fortunately, the time comes for praise, and this is due to the TCL AiPQ image processor for its work in the field of digital processing and content scaling. It should be noted right away that we are not talking about the level known from flagship designs; however, in the price segment represented by the P7K/P79K, the results achieved are more than solid. The feature for smoothing tonal transitions performs particularly well, effectively eliminating posterisation, which are the characteristic bands often visible in highly compressed materials, for example, from the ChooseTV service. The algorithm adeptly removes unwanted gradients, which ultimately looks really good. The television also handles upscaling competently, which is the task of elevating low-resolution materials to 4K standard. The resulting image, although it may initially seem a bit too sharp, fortunately, is not a problem. The software allows for free adjustment of this parameter using a sharpness slider, making it easy to customise the final appearance to personal preferences.

The PUS7000 handles digital image processing quite well. The distortion reduction feature deserves praise, as it effectively smooths out unwanted tonal transitions even at low settings. However, it has a drawback: if applied too aggressively, it can introduce undesirable artifacts on the screen. Therefore, it would be a good idea to experiment with this setting to find a happy medium between a smooth image and detail clarity.

The upscaling, or enhancing the quality of lower-resolution materials to 4K, is adequate. The image after processing is very "soft," which is typical for nearly all Philips televisions. The edges are plastic and smooth, making the image look cohesive. If it feels too soft for someone, the sharpness slider in the menu can always be adjusted to achieve a more pronounced effect.

The issue of fluidity and sharpness of the image in motion is inextricably linked to a fundamental parameter of the matrix, and in the case of the TCL P7K/P79K, we are dealing with a panel with a native refresh rate of 60 Hz. This specification defines its capabilities from the outset and makes it difficult to unequivocally recommend it to enthusiasts of dynamic sports broadcasts. During fast camera movements, the image loses sharpness, and the panel also shows a slight tendency to smearing, which may be noticeable to more sensitive viewers. Fortunately, not everything in this aspect has been left to chance. The manufacturer has implemented a simple motion smoothing system, which is primarily used in film material recorded at 24 or 30 frames per second. Thanks to a dedicated slider, users can decide for themselves the final character of the motion – from maintaining a fully cinematic, slightly juddery image to achieving a very smooth, almost theatrical effect. It is a simple but effective tool that allows users to tailor the viewing experience to their own preferences.

In this respect, we actually have no good news. It might seem that the biggest downside is the lack of a 120 Hz panel, but in this price range, that is actually the norm, and it is hard to expect anything more. However, the worst part is that the television does not have any features to improve motion smoothness. There is a lack of any supporting systems, both in films and in sports. We must come to terms with the fact that the image on the PUS7000 is processed "raw". This means that during dynamic scenes or fast camera movements, the motion can appear choppy or unclear. We do not have the option to enable any smoothers that would reduce this effect.

Although on paper the native 4K@60Hz panel might suggest that the TCL P7K/P79K is not a television tailored for gamers, the reality is surprisingly different. On the contrary, the manufacturer has ensured a rich package of features that make it a very friendly companion for next-generation consoles. Onboard, we find key technologies such as ALLM, which provides automatic switching to low latency mode, and VRR, or variable refresh rate, which eliminates screen tearing. The list is complemented by support for Dolby Vision Gaming and a simple yet functional Game Bar. However, the real and extremely pleasant surprise is something else. It turns out that the television easily supports a high refresh rate signal of 120 Hz but at lower resolutions – 1080p and 1440p. This is fantastic news for console owners, who know well how rarely games run in native 4K at a full 120 frames per second. The ability to choose between higher resolution and doubled smoothness is therefore an extremely sensible compromise.

In summary, although the P7K/P79K may not be the target screen for the most passionate tournament players, for the casual or occasional console user, it offers a package of options that is hard to find among many competitors at this price.

Although the PUS7000 is not marketed as a gaming television, it does not perform as poorly in this category as one might expect. While it is true that we won’t find support for 120 Hz refresh rates, which is understandable at this price point, the manufacturer has ensured several important features that genuinely enhance the gaming experience on consoles. The most important of these are the VRR and ALLM technologies. VRR is responsible for synchronising the screen with the number of frames generated by the console. This prevents the image from tearing and keeps it consistent even during sudden drops in frame rate while gaming. In contrast, ALLM is a solution that automatically switches the television to the lowest latency mode as soon as it detects a signal from the console. All these parameters are easily accessible thanks to the Game Bar feature. This is a special control panel for gamers that can be summoned on screen at any time. It allows for a quick preview of the current settings and connection status without interrupting gameplay, which is a very convenient solution.